Democratic Sen. Bob Casey (Pa.) is pressing the Commodity Futures Trading Commission (CFTC) to help ease rising gasoline prices.

In a letter sent to CFTC Chairman Gary Gensler on Sunday, Casey called on the agency to implement a rule that would limit speculation in the oil market and is two years in the making.

“Consumers shouldn’t be forced to pay higher prices at the pump because of speculative bets on Wall Street,” Casey said.

Nearly two years ago Congress gave the CFTC the tools to crackdown on speculation in the oil market, and with sky high prices at the pump it’s time they used it.”